CN201750987U - Dry desulfurizing tower capable of regenerating and cycling a desulfurizer - Google Patents
Dry desulfurizing tower capable of regenerating and cycling a desulfurizer Download PDFInfo
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- CN201750987U CN201750987U CN2010202631725U CN201020263172U CN201750987U CN 201750987 U CN201750987 U CN 201750987U CN 2010202631725 U CN2010202631725 U CN 2010202631725U CN 201020263172 U CN201020263172 U CN 201020263172U CN 201750987 U CN201750987 U CN 201750987U
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- desulfurizing tower
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Abstract
A dry desulfurizing tower capable of regenerating and cycling a desulfurizer comprises a tower body with the desulfurizer inside, a gas inlet valve (1) at the bottom of the tower body and a gas outlet, characterized in that: a steam blowing port (4) with a valve is arranged at the bottom of the valve body and connected with a steam outlet of a steam boiler (7) by the pipeline. The dry desulfurizing tower has functions of desulfurization, dust removal, water uptake, explosion prevention and decompression, voltage stabilization and gas storage. The dry desulfurizing tower has advantages of stable work, small pressure loss and easy maintenance due to the desulfurizer with features of low cost, high desulfurization efficiency, safety and reliability and is the first-choice device for desulfurizing the coke oven gas.
Description
Technical field
The utility model relates to the desulphurization plant in the fine purification technique for coke oven gas, is a kind of efficient cleaning equipment that utilizes the regenerating desulfurization agent to carry out coke oven gas desulfurization, dedusting specifically.
Background technology
Can produce a large amount of coke-stove gas during coking industry coking, coke-stove gas is as the tail gas of coke-oven plant's coking, and main component has hydrogen, methane, carbon monoxide, lighter hydrocarbons compound, carbon dioxide, hydrogen sulfide, oxygen, nitrogen etc.Directly discharged as waste gas in the past always or discharged with " point day lamp " form burning back, contain in the coke-stove gas on the one hand a large amount of sulfide major polluting atmosphere environments (methane wherein to the destructive power of ozone layer be carbon dioxide 20 surplus times), contain a large amount of CH on the other hand in the coke-stove gas
4, H
2Wasted Deng fuel gas, only Chinese coking industry did not carry out handling every year and the coke-stove gas total amount of directly diffusing emptying just is equivalent to two " total displacement of West-east Gas is wasted quite surprising yet.
In recent years, along with the raising of people to environmental protection and energy-saving and emission-reduction consciousness, coking industry produces a large amount of coke-stove gas and is more and more paid close attention to by people.Now,, be in simultaneously and improve the needs that self industrial chain is developed a circular economy, coke-stove gas is fully utilized extremely urgent under the pressure of the pressure of energy-saving and emission-reduction policy.
Because the hydrogen sulfide in the coke-stove gas is the very strong sour gas of a kind of corrosivity, can produce corrosiveness to gas equipments such as fuel gas generation units, have a strong impact on the life-span of gas equipments such as fuel gas generation unit.Removing hydrogen sulfide is an important link in fine purification technique for coke oven gas.
Three, existing processing mode generally is to adopt:
1, utilize quick lime as desulfurizing agent
Quick lime (being calcium oxide) is dissolved in the water, the coke-stove gas that will contain hydrogen sulfide passes through aqua calcis, perhaps aqua calcis is smoked with corrosion-resistant water circulating pump, by high-pressure nozzle coke-stove gas is carried out spray washing, alkaline solution and hydrogen sulfide generation neutralization reaction generate water-fast calcium sulfide.
But: 1), the calcium sulfide that generates of quick lime (calcium oxide) and neutralization reaction forms fouling easily in desulphurization plant, understand occluding device for a long time;
2), desulfurizing agent regeneration difficulty and do not have the value of regeneration.
2, utilize NaOH as desulfurizing agent
NaOH (being commonly called as highly basic) is dissolved in the water, the coke-stove gas that will contain hydrogen sulfide passes through sodium hydroxide solution, perhaps sodium hydroxide solution is smoked with corrosion-resistant water circulating pump, by high-pressure nozzle coke-stove gas is carried out spray washing, alkaline solution and hydrogen sulfide generation neutralization reaction, it is water-soluble to generate vulcanized sodium.
1), NaOH (being commonly called as highly basic) corrosivity is very strong shortcoming is:, cause personal injury accidents easily;
2), desulfurizing agent is non-renewable.
3, utilize the graininess basic anhydride as desulfurizing agent
Shortcoming is: 1), directly use granular basic anhydride as desulfurizing agent, because basic anhydride are graininess, contact fully inadequately with coke-stove gas, cause the effect of desulfurization also not good.
2), granular basic anhydride only have the surface part can with hydrogen sulfide generation neutralization reaction, granule interior can't participate in neutralization reaction, sorbent utilization is very low.
3), granular basic anhydride mostly are artificial synthetic, need plant equipment to carry out machine-shaping, the cost height.
4, utilize brown iron oxide and rice husk to mix and make desulfurizing agent
Utilize brown iron oxide to mix as desulfurizing agent with rice husk, the wood fibre of rice husk is few, adsorption and oxidation iron powder ability, and soaking effect is not good, and lumps easily, and after use a period of time, desulfurized effect can be worse and worse.
Summary of the invention
The utility model discloses a kind of renewable dry type desulfurizing tower that recycles desulfurizing agent, this desulfurizing tower is used cheap special-purpose desulfurizing agent, and desulfurization method is efficient more, use cost is minimum and the renewable desulphurization plant that recycles of desulfurizing agent.
The described renewable dry type desulfurizing tower that recycles desulfurizing agent, comprise the body of the tower of built-in desulfurizing agent, air intake valve, the gas outlet of body of the tower bottom, it is characterized in that: the bottom of described body of the tower also is provided with the steam blowing mouth of band valve, and this steam blowing mouth is connected on the venthole of steam boiler by pipeline.
Be provided with single or multiple lift desulfurizing agent layer in the body of the tower of described dry type desulfurizing tower.
The cat head of described dry type desulfurizing tower is provided with the gas outlet, and the gas outlet is separately installed with in two exit by threeway and gives vent to anger valve and diffuse valve.
The outer wall of described body of the tower is equipped with the explosion-proof relief plate.
The beneficial effects of the utility model are:
1, desulfuration efficiency height, power consumption is few, only need consume small amount of steam.
2, desulfurizing agent is renewable recycles, and desulfurizer therefor is cheap, and the replacement cycle is long, and use cost is low.
3, equipment investment is few, and is simple in structure, and fault rate is low, easy to operate, is convenient to management.
The present utility model possesses multiple functions such as desulfurization, dedusting, suction, explosion-proof relief, voltage stabilizing, gas storage.Cooperate low cost and desulfuration efficiency height, safe and reliable desulfurizing agent, have working stability, the pressure loss little, be easy to advantage such as maintenances, be the preferred unit that coke-stove gas is carried out the desulfurization processing.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1-air intake valve, the 2-valve of giving vent to anger, 3-diffuses valve, 4-steam blowing mouth, 5-explosion-proof relief plate, 6-desulfurizing agent, 7-steam boiler.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified: the renewable as shown in fig. 1 dry type desulfurizing tower that recycles desulfurizing agent, comprise the body of the tower of built-in desulfurizing agent, air intake valve 1, the gas outlet of body of the tower bottom, the bottom of described body of the tower also is provided with the steam blowing mouth 4 of band valve, and this steam blowing mouth 4 is connected on the venthole of steam boiler 7 by pipeline.
Be provided with single or multiple lift desulfurizing agent layer in the body of the tower of described dry type desulfurizing tower.
Described desulfurizing agent is that (main component is Fe with brown iron oxide
2O
3And FeO) mixes according to certain ratio with wood sawdust, brown iron oxide is adsorbed on equably forms the desulfurization bed body on the wood sawdust, put in the desulfurizing tower (can be single or multiple lift) after mix is even, the acid-base neutralization reaction takes place in hydrogen sulfide and brown iron oxide on the loose desulfurization bed body that is formed by wood sawdust, generate iron sulfide and ferrous sulfide and, can remove the hydrogen sulfide in the coke-stove gas attached on the wood sawdust.
In the process that coke-stove gas is purified, desulfurizing agent (mixture of brown iron oxide and wood sawdust) lost efficacy because participating in the acid-base neutralization reaction, the iron sulfide that generates can influence the permeability of equipment, in the dry type desulfurizing tower, feed the activity (can separate out the monocrystalline Sulfur simultaneously) that high-temperature vapour can the reduction and desulfurization agent this moment and recover the gas porosity of wood sawdust, thereby reach the purpose that the working media regeneration cycle is used.
The desulphurization reaction chemical equation:
Fe
2O
3+3H
2S＝Fe
2O
3+3H
2O
FeO+H
2S＝FeS+H
2O
Desulfurizing agent regeneration chemical equation:
In sum, when utilizing brown iron oxide to carry out the desulfurization processing, acid-base neutralization will just can react having under the environment of aqueous water, the mode that adopts brown iron oxide to mix with wood sawdust in desulphurization plant just is well positioned to meet the necessary full terms of these neutralization reactions, the wood-fibred of wood sawdust can absorb moisture well, loose wood sawdust is mixed the contact area and the haptoreaction time that can increase desulfurizing agent and hydrogen sulfide with brown iron oxide simultaneously, provide good reaction bed for desulphurization reaction to greatest extent, the abundant catalytic while of hydrogen sulfide in guaranteeing brown iron oxide and coke-stove gas, guarantee the trafficability characteristic of coke-stove gas, thereby guaranteed the high efficiency of desulfurization.
The cat head of described dry type desulfurizing tower is provided with the gas outlet, and the gas outlet is separately installed with in two exit by threeway and gives vent to anger valve 2 and diffuse valve 3.The outer wall of described body of the tower is equipped with explosion-proof relief plate 5.
Coke-stove gas enters into the dry type desulfurizing tower through pipeline by air inlet 1, neutralization reaction takes place in iron oxide and hydrogen sulfide during by single or multiple lift desulfurizing agent 6 on loose wood sawdust reaction bed, iron sulfide that generates and ferrous sulfide are attached on the wood sawdust, coke-stove gas 2 leaves desulfurizing tower through the gas outlet again, finishes the overall process of desulfurization.
After desulfurizing tower work a period of time, the neutralization reaction of iron oxide and ferrous oxide process and hydrogen sulfide generates iron sulfide and ferrous sulfide, thereby need reduce to desulfurizing agent, method of operating is as follows, get angry for 7 of steam boilers, produce steam, open and diffuse valve 3, close all other valve, high-temperature vapour is passed into the desulfurizing tower from steam blowing mouth 4, and the desulfurizing agent of high-temperature steam and inefficacy carries out chemical reaction, desulfurizing agent after the reduction is able to regeneration cycle and uses, separate out monocrystalline sulphur simultaneously and flow into the desulfurizing tower bottom with liquid form, the sulphur of separating out after temperature is reduced to normal temperature becomes solid sulphur, can reclaim and be used.
Claims (4)
1. renewable dry type desulfurizing tower that recycles desulfurizing agent, comprise the body of the tower of built-in desulfurizing agent, air intake valve (1), the gas outlet of body of the tower bottom, it is characterized in that: the bottom of described body of the tower also is provided with the steam blowing mouth (4) of band valve, and this steam blowing mouth (4) is connected on the venthole of steam boiler (7) by pipeline.
2. the renewable dry type desulfurizing tower that recycles desulfurizing agent according to claim 1 is characterized in that: be provided with single or multiple lift desulfurizing agent layer in the body of the tower of described dry type desulfurizing tower.
3. the renewable dry type desulfurizing tower that recycles desulfurizing agent according to claim 1, it is characterized in that: the cat head of described dry type desulfurizing tower is provided with the gas outlet, and the gas outlet is separately installed with the valve of giving vent to anger (2) and diffuses valve (3) by threeway in two exit.
4. the renewable dry type desulfurizing tower that recycles desulfurizing agent according to claim 1, it is characterized in that: the outer wall of described body of the tower is equipped with explosion-proof relief plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202631725U CN201750987U (en) | 2010-07-16 | 2010-07-16 | Dry desulfurizing tower capable of regenerating and cycling a desulfurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202631725U CN201750987U (en) | 2010-07-16 | 2010-07-16 | Dry desulfurizing tower capable of regenerating and cycling a desulfurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201750987U true CN201750987U (en) | 2011-02-23 |
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ID=43601391
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202631725U Expired - Fee Related CN201750987U (en) | 2010-07-16 | 2010-07-16 | Dry desulfurizing tower capable of regenerating and cycling a desulfurizer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108025255A (en) * | 2015-09-17 | 2018-05-11 | 积水化学工业株式会社 | Gas processing method |
| WO2018192542A1 (en) * | 2017-04-19 | 2018-10-25 | 成都天立化工科技有限公司 | Regeneration method for desulfurizer elementary substance sulfur in desulfurization column |
| CN111214127A (en) * | 2018-11-23 | 2020-06-02 | 宁波方太厨具有限公司 | Heating and humidifying mechanism and oven using same |
| CN112126486A (en) * | 2020-10-10 | 2020-12-25 | 海宁惠迪太阳能技术有限公司 | Marsh gas energy purifying agent cyclic utilization equipment |
| CN113832272A (en) * | 2021-09-28 | 2021-12-24 | 四川天人能源科技有限公司 | Improved method for hydrolytic desulfurization of blast furnace gas |
-
2010
- 2010-07-16 CN CN2010202631725U patent/CN201750987U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108025255A (en) * | 2015-09-17 | 2018-05-11 | 积水化学工业株式会社 | Gas processing method |
| WO2018192542A1 (en) * | 2017-04-19 | 2018-10-25 | 成都天立化工科技有限公司 | Regeneration method for desulfurizer elementary substance sulfur in desulfurization column |
| CN111214127A (en) * | 2018-11-23 | 2020-06-02 | 宁波方太厨具有限公司 | Heating and humidifying mechanism and oven using same |
| CN111214127B (en) * | 2018-11-23 | 2023-01-03 | 宁波方太厨具有限公司 | Baking oven |
| CN112126486A (en) * | 2020-10-10 | 2020-12-25 | 海宁惠迪太阳能技术有限公司 | Marsh gas energy purifying agent cyclic utilization equipment |
| CN113832272A (en) * | 2021-09-28 | 2021-12-24 | 四川天人能源科技有限公司 | Improved method for hydrolytic desulfurization of blast furnace gas |
| CN113832272B (en) * | 2021-09-28 | 2022-09-27 | 四川天人能源科技有限公司 | Improved method for hydrolytic desulfurization of blast furnace gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110223 Termination date: 20180716 |